Superheater.



F. L. G. PAGE.

SUPERHEATER. V

APPLICATION man JAN. 5. 191s.

1 ,$245,263. y Patented Nov. 6, 191?.

A 3 wen/601,0 i 62% Y srATns inrinvtrv orrrcn. i

FRANK L. Gr. PAGE, OF NEW YORK, N. Y., ASSIGNOR TO POWER SPECIALTY COMPANY,

OFNEW YORK, N. Y., ACORPORATION OF NEW YORK.

SUPERHEATER.

` To att whom itlm'y concern:

Be it known that I, FRANK L. G. PAGE, a citizen of -the United States, residing at NewYork, county and State of New York, have invented certainnew and useful Improvements in Superheaters, of which the following is a full,'clear, and exact description.

The invention which constitutes the subject matter of this application relates to an improvement upon the superheater device shown and described in the patent to Primrose, No. 1,152,839, granted September 7 1915. The invention pertains to a construction in which there are provided at least five horizontal rows of superheater elements projecting rearwardly into enlarged fire tubes and in which one superheating unit or element, although its end portions be substantially behind other end portions, may be individually removed for repair or replacement without necessarily removing any of the other units.

In the drawings,

Figure l is a front view of" the device illustrating the relation of the superheater to the smoke box, re tubes and tube sheet of the boiler.

Fig. substantially on the line 2-2 of Fig. 1.

Fig. 3 is a top plan view in section of the header, illustrating the connections between the header and superheating units and takenI substantially on the line 3-3 of Fig. 1.

Referring to the drawings in detail, the reference character 10 designates the forward portion of a locomotive or stationary boiler, provided with the usual lire tubes 11, smoke box 12,tube sheet 13 and dry pipe 14:. The superheater comprises a saturated steam header 15 into which the dry pipe 14 discharges, the superheated steam header 16, and the superheating elements or units which project rearwardly into the re tubes 11 and the inlet and outlet ends of which are preferably expanded respectively into the inlet and outlet headers 15 and 16.

The fire tubes are arranged in vertical and horizontal rows, as is usual in boiler construction, but only five horizontal rows are utilized so far as the ypresent drawings are concerned to, elucidate my invention. In order to explain my invention, I show in Fig. 2 three vertical rows, A, B and C, of fire tubes and a corresponding number of Specification of Letters Patent.

2 is a front view of the device taken Patented Nov. c, 1917.

Application led January 5, 1916.' Serial No. 70,369.

vertical rows of superheating units therein,

andfor convenience of description I designate the units in each Avertical row as la, 2a, ser, 5a; 11321, 3541), 5b; and 1c, 2c, 3, 4c, 5c respectively, it being of course understoo that the arrangement in one row is 'the same as the arrangement in the other rows. Take i the middle row as seen in Figs. 2 and 3 and suppose it is desired to remove unit 1". InY this case, it is only necessary to'disconnect the ends thereof from the header and move .it straight forwardly between 2b and l" on the one hand and 3b and 5b on theother. To remove unit 2* (assuming the others to be in normal position) disconnect the ends thereof fromr the headers, turn said ends slightly to the left, that is, toward 1", then 'withdraw between 3b,and 5b on the one hand and 4b on the other. To remove unit 3" (assuming the others to be in normal position) disconnect the ends thereof from the headers and withdraw the same between the superheated ends of 5" and lbl To withdraw 4:", assuming the otherunits to be in place: The superheated end of 4b comes .straight out without interference, it being located forwardly of all the other ends of those in the vertical row. The other end,

heated end of 5b comes straight out, there being no interference to this movement; the other end is disconnected and withdrawn between the saturated ends Lltand 3* and thenbetween the superheated ends 3" and 1b on the one hand and 2a and 4 on the A other.

'In designing a superheater of this character, due consideration may be given to the fact,vowing to the flexibility of the units' and particularly the ends thereof, that the units can be arranged into closer proximity to each other than what they otherwise could. i y

The end portions of unit 1b are straightl The units 2b, 3", 4b and 5b are bent outwardlyto form a path or lane for the withdrawal of the units, as will be understood. lThis path or-lane isv also desirablev for the morel efficient discharge of .the furnace gases from the boiler tubes in which lthe s uperheater coils are contained.

'Io remove 5b (assuming What I claim is: l

1. The combination with a boiler having live fire-tubes arranged one above another in substantially the same vertical plane, of a header provided with steam chambers, and a superheater unit arranged in each ofgsaid fire tubes and having upwardly projecting end portions which 'are expanded into said chambers, the end portions of a plurality of said units being located substantially be hind` one another, and any of said units adapted to be removed independently of the others.

2. The combination'with a boiler having five fire tubes arranged one above another in the same vertical plane, of a header pro# vided with steam chambers, and a super-.5` heater unitprojecting rearwardly into each of'said fire-tubes and havingrupwardly projecting end portions which are-- expanded vinto said chambers with the end portions vof alternate units lying on opposite sides of a plane passing through the Vaxes of said tubes, and with a plurality of portions on either side lying in front of one another,

said end portions of any unit adapted t0 be A I shifted laterally so'that 'an unit can be removed vfrom the boiler in ependently of the others.

3. The combination .with a boiler re tubes arranged. in horizontal vertice, rows, each of the vertical rows compri five fire tubes, of 'a'header provid steam chambers, and superhnater units 4ar-f ranged in each of the fire tubes and having upwardly projecting end ortions which are expanded into` said cham ers,-the end por:

tions of a plurality of the upper units be` signature. o

FRANK L. E'FPAGE;

boiler i 

